YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | 25.68 | 28.72 | 39.85 | 41.92 | 56.85 | 56.37 | 68.08 | 63.90 | 57.97 | 47.47 | 37.15 | 23.87 | 45.65 | |||||||||||||
1929 | 16.06 | 20.16 | 37.92 | 40.23 | 51.02 | 57.45 | 67.15 | a | 69.35 | 53.30 | 48.85 | 33.85 | 34.76 | 44.18 | ||||||||||||
1930 | 11.97 | 34.41 | a | 40.08 | 49.33 | 50.53 | 56.27 | 67.97 | 68.03 | 57.20 | 43.89 | 32.90 | 20.95 | 44.46 | ||||||||||||
1931 | 26.37 | 30.91 | 38.34 | 45.05 | 54.82 | 59.43 | 70.00 | 68.60 | 55.85 | 47.47 | 31.07 | 23.72 | a | 45.97 | ||||||||||||
1932 | 20.73 | 23.26 | 36.42 | 45.07 | 51.21 | 60.33 | 64.90 | 63.47 | 57.57 | 47.44 | 39.38 | 20.90 | 44.22 | |||||||||||||
1933 | 22.74 | 17.32 | 34.90 | 43.13 | 47.69 | 61.80 | 68.18 | 65.82 | 54.27 | 51.87 | 38.27 | 37.40 | 45.28 | |||||||||||||
1934 | 35.55 | 39.96 | 45.58 | 52.05 | a | 58.08 | 59.28 | 67.55 | 68.19 | 55.65 | 49.69 | 41.92 | 28.24 | 50.15 | ||||||||||||
1935 | 27.68 | 31.84 | 33.81 | 42.92 | 50.40 | 58.85 | 66.74 | 65.45 | 61.35 | 46.45 | 31.02 | a | 28.10 | 45.38 | ||||||||||||
1936 | 26.27 | 20.50 | 35.10 | 49.08 | 57.44 | 61.53 | 69.71 | 68.00 | 56.87 | 50.85 | 34.15 | 30.37 | 46.66 | |||||||||||||
1937 | 9.37 | 26.27 | 39.55 | 43.27 | 54.52 | 58.85 | 69.37 | 64.87 | 60.23 | 52.06 | 41.40 | 34.69 | 46.20 | |||||||||||||
1938 | 32.92 | 33.80 | 37.60 | 46.87 | 52.02 | 61.68 | 69.60 | 64.44 | 63.40 | 48.92 | 31.60 | 30.21 | 47.75 | |||||||||||||
1939 | 29.97 | 26.27 | 39.71 | 48.05 | a | 55.58 | 56.42 | 69.06 | 68.44 | 58.82 | 47.31 | 39.28 | 36.10 | 47.92 | ||||||||||||
1940 | 30.02 | 34.97 | 41.73 | 46.02 | 56.00 | 63.70 | 68.69 | 68.39 | 59.33 | 50.08 | 31.93 | 33.19 | 48.67 | |||||||||||||
1941 | 32.32 | 35.07 | 42.39 | 46.22 | 52.94 | 57.98 | 69.47 | 64.82 | 52.03 | 45.92 | 38.98 | 31.74 | 47.49 | |||||||||||||
1942 | 23.66 | 28.25 | 36.56 | 46.73 | 48.63 | 55.07 | 67.81 | 66.66 | 59.35 | 49.13 | 36.05 | 29.58 | 45.62 | |||||||||||||
1943 | 21.60 | 32.21 | 36.45 | 47.88 | 47.89 | 54.25 | 66.74 | 63.29 | 62.00 | 48.35 | 38.63 | 30.29 | 45.80 | |||||||||||||
1944 | 24.55 | 30.33 | 34.95 | 44.40 | 53.24 | 56.72 | 65.39 | 64.00 | 58.95 | 53.98 | 34.78 | 27.15 | 45.70 | |||||||||||||
1945 | 28.13 | 34.04 | 36.50 | 42.25 | 52.40 | 56.27 | 68.39 | 66.48 | 54.95 | 50.52 | 35.58 | 27.76 | 46.11 | |||||||||||||
1946 | 25.87 | 29.25 | 39.29 | 47.20 | 53.37 | 57.88 | 66.98 | 65.94 | 55.18 | 41.05 | 34.73 | 32.76 | 45.79 | |||||||||||||
1947 | 21.55 | 36.16 | 41.79 | 45.95 | 57.90 | 56.07 | 67.90 | 64.53 | 58.35 | 50.35 | 34.05 | 29.45 | 47.01 | |||||||||||||
1948 | 29.61 | 28.91 | 34.74 | 42.52 | 50.74 | 62.23 | 63.40 | 63.23 | 56.58 | 47.66 | 33.32 | 20.05 | 44.42 | |||||||||||||
1949 | 7.35 | 27.54 | 39.16 | 47.98 | 55.90 | 58.83 | 65.77 | 67.21 | 60.35 | 42.85 | 42.93 | 28.84 | 45.39 | |||||||||||||
1950 | 18.43 | a | 31.23 | 35.66 | 42.20 | b | 49.16 | 57.62 | 65.87 | 66.87 | 58.15 | 50.79 | 38.62 | 35.13 | 45.81 | |||||||||||
1951 | 25.27 | 31.61 | 32.90 | 46.62 | 52.39 | 57.30 | 68.89 | 65.65 | 59.53 | 45.50 | 35.68 | 24.18 | 45.46 | |||||||||||||
1952 | 23.40 | 25.26 | 33.50 | 48.02 | 53.02 | 58.00 | 67.02 | 65.97 | 61.48 | 53.39 | 32.95 | a | 28.95 | 45.91 | ||||||||||||
1953 | 37.79 | 32.16 | 38.50 | 44.33 | 50.02 | a | 55.57 | 66.60 | 65.10 | 60.35 | 49.84 | 41.55 | 29.21 | 47.58 | ||||||||||||
1954 | 31.48 | 38.77 | 37.82 | 46.48 | 55.47 | 55.37 | 67.97 | 61.53 | 56.93 | 48.11 | 41.93 | 25.26 | 47.26 | |||||||||||||
1955 | 20.58 | 25.18 | 31.21 | 41.42 | 50.77 | 61.19 | a | 64.95 | 66.03 | 58.63 | 48.18 | 29.07 | a | 29.69 | 43.91 | |||||||||||
1956 | 30.11 | 21.84 | 38.53 | a | 47.78 | 55.08 | 59.48 | 68.97 | a | 65.26 | 60.72 | 44.97 | ----- | z | 27.50 | 47.30 | a | |||||||||
1957 | 17.85 | 31.59 | a | 40.11 | 46.32 | 54.84 | 62.38 | 69.76 | ----- | z | 60.80 | 46.98 | 34.27 | 32.92 | 45.26 | a | ||||||||||
1958 | 30.13 | 39.82 | 35.77 | 43.38 | 58.87 | 62.75 | 68.60 | b | 70.55 | 58.33 | 51.27 | a | 36.77 | 35.89 | 49.34 | |||||||||||
1959 | 31.88 | a | 33.96 | 38.90 | a | 47.87 | 49.85 | 61.72 | 68.29 | 63.77 | 56.17 | 47.58 | 34.93 | 29.63 | 47.05 | |||||||||||
1960 | 23.50 | 29.26 | 38.63 | 47.30 | 51.79 | 62.22 | 71.97 | a | 63.60 | 61.53 | 49.75 | c | 37.95 | 29.56 | f | 48.86 | a | |||||||||
1961 | 30.90 | 38.48 | 39.76 | 48.12 | ----- | z | 67.62 | ----- | z | 69.26 | j | 52.50 | 43.37 | 32.67 | a | 28.79 | 42.47 | c | ||||||||
1962 | 21.71 | 30.32 | 38.10 | 50.85 | 51.16 | 62.07 | 66.29 | 64.44 | 60.10 | 49.42 | 40.47 | 34.12 | r | 48.63 | a | |||||||||||
1963 | 21.28 | v | 41.50 | 37.98 | 39.57 | 54.94 | 59.84 | b | 64.44 | 68.39 | c | 65.05 | b | 52.94 | 40.03 | a | 27.52 | a | 50.20 | a | ||||||
1964 | 25.92 | a | 26.70 | b | 33.97 | 43.78 | a | 52.68 | 59.86 | a | ----- | z | 64.42 | a | 56.60 | 50.90 | a | 35.62 | 29.74 | 43.65 | a | |||||
1965 | 30.05 | 34.81 | a | 37.13 | 48.09 | a | 52.08 | 60.23 | 67.97 | 66.25 | a | 53.87 | 52.95 | a | 40.46 | b | 29.30 | a | 47.77 | |||||||
1966 | 31.75 | a | 30.73 | 40.13 | 47.00 | 56.95 | 58.90 | a | 67.23 | 67.63 | 63.66 | a | 47.98 | 38.92 | 31.74 | 48.55 | ||||||||||
1967 | 33.84 | 35.98 | 37.88 | b | 40.57 | a | 53.16 | 61.93 | 70.40 | 71.90 | 64.43 | 48.37 | 38.25 | 27.73 | c | 48.70 | ||||||||||
1968 | 27.98 | 37.45 | 43.63 | 43.34 | a | 53.05 | 62.22 | 70.81 | 63.78 | a | 58.86 | a | 47.31 | 36.60 | a | 28.15 | 47.76 | |||||||||
1969 | 26.26 | 29.71 | 38.52 | 47.28 | 56.92 | 61.62 | 66.32 | 65.90 | 60.45 | 43.69 | 38.52 | 32.26 | 47.29 | |||||||||||||
1970 | 31.10 | a | 37.70 | 36.92 | a | 39.90 | 53.30 | a | 64.78 | a | 69.39 | 69.55 | 53.92 | 45.06 | 37.93 | a | 26.42 | 47.16 | ||||||||
1971 | 29.71 | 33.82 | 35.37 | 44.95 | 54.15 | 58.18 | 67.71 | 72.35 | 53.68 | 44.48 | 35.14 | a | 24.48 | 46.17 | ||||||||||||
1972 | 24.67 | a | 31.86 | 42.97 | 42.60 | 56.42 | 61.60 | 67.52 | 69.13 | 54.50 | a | 48.43 | a | 36.88 | 23.00 | 46.63 | ||||||||||
1973 | 27.13 | a | 36.55 | 39.65 | 45.45 | 55.72 | a | 61.97 | 70.23 | 67.02 | ----- | z | 48.45 | a | 36.50 | 34.13 | 47.53 | a | ||||||||
1974 | 24.40 | 35.30 | 39.52 | b | 45.48 | 50.85 | 66.62 | a | 67.53 | b | 67.43 | a | 62.35 | 49.66 | 38.78 | a | 28.79 | b | 48.06 | |||||||
1975 | 26.55 | 30.48 | 37.00 | 40.85 | 53.18 | a | 59.08 | 70.65 | 64.35 | a | 60.20 | 48.23 | 35.05 | 31.73 | 46.45 | |||||||||||
1976 | 28.91 | b | 30.32 | a | 35.84 | 44.88 | a | 55.10 | 57.78 | 68.62 | a | 63.63 | a | 61.92 | 48.94 | 40.14 | a | 30.52 | 47.22 | |||||||
1977 | 20.98 | 36.57 | 36.71 | 50.10 | 49.36 | c | 64.98 | a | 66.82 | 69.55 | 56.93 | 48.57 | b | 35.79 | b | 33.58 | a | 47.50 | ||||||||
1978 | ----- | z | 36.52 | 44.90 | a | 45.22 | 50.58 | 60.45 | 67.69 | 64.61 | 56.95 | 49.35 | 31.91 | a | 19.75 | a | 47.99 | a | ||||||||
1979 | 13.12 | a | 30.72 | a | 40.35 | 44.93 | 54.98 | 61.76 | a | 68.67 | a | 67.73 | 62.77 | 51.27 | 33.60 | 33.45 | a | 46.95 | ||||||||
1980 | 26.18 | 37.12 | 38.18 | 49.83 | 54.06 | 57.40 | 67.98 | 63.31 | 59.87 | 49.48 | 37.93 | 33.11 | 47.87 | |||||||||||||
1981 | 34.55 | 34.91 | 41.34 | 47.58 | 52.32 | 59.57 | 65.23 | 70.61 | 59.68 | 44.71 | 39.57 | 31.98 | 48.50 | |||||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 25.69 | 31.64 | 38.14 | 45.49 | 53.23 | 59.80 | 67.87 | 66.34 | 58.50 | 48.37 | 36.56 | 29.32 | 46.68 | |||||||||||||
S.D. | 6.43 | 5.30 | 2.95 | 2.92 | 2.75 | 2.93 | 1.75 | 2.44 | 3.15 | 2.79 | 3.26 | 4.23 | 1.43 | |||||||||||||
SKEW | -0.84 | -0.56 | 0.23 | -0.12 | 0.00 | 0.38 | -0.21 | 0.48 | -0.09 | -0.35 | -0.12 | -0.43 | 0.09 | |||||||||||||
MAX | 37.79 | 41.50 | 45.58 | 52.05 | 58.87 | 67.62 | 71.97 | 72.35 | 65.05 | 53.98 | 42.93 | 37.40 | 50.15 | |||||||||||||
MIN | 7.35 | 17.32 | 31.21 | 39.57 | 47.69 | 54.25 | 63.40 | 61.53 | 52.03 | 41.05 | 29.07 | 19.75 | 43.91 | |||||||||||||
YRS | 52 | 54 | 54 | 54 | 53 | 54 | 52 | 52 | 53 | 54 | 53 | 52 | 45 |